Shawna Coronado, one of America's most creative gardeners, gives you her library of clever gardening tricks in 101 Organic Gardening Hacks. If you ask garden author Shawna Coronado what a hack is, she might just wave her hand toward her own back yard. She could be pointing at the garden bench she created from leftover wood posts and a few cinder blocks, or the rows of wine bottles buried soldier-style along a winding pathway,...